Silane primer composition

Abstract

The present invention relates to an improved silane primer composition utilized to form multi-layer sanitaryware such as kitchen and bathroom fixtures. The silane primer composition includes N-2-(vinyl-benzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride dissolved in a suitable carrier. Alternatively, the silane primer composition includes a silane coupling agent dissolved in a diluent-effective concentration of methoxypropanol.

What is claimed is: 
     
       1. A silane primer composition for use in bonding a plastic layer onto a metal sanitaryware or onto a ceramic enamel layer on a metal sanitaryware to form a reinforced laminate, comprising: N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride in an amount sufficient to bond the plastic layer onto the metal sanitaryware or onto the ceramic enamel layer on the sanitaryware; and   methoxypropanol as a carrier which is capable of evaporating and which is present in an amount sufficient to dissolve the N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride.   
     
     
       2. The silane primer composition of claim 1, wherein the N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride is present in an amount between about 3% and 9% percent by weight. 
     
     
       3. The silane primer composition of claim 1, wherein the methoxypropanol is present in an amount between about 91% and 97% by weight. 
     
     
       4. The silane primer composition of claim 1, wherein the N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride is capable of bonding an unsaturated polyester containing vinyl monomer, epoxy, polyurethane, isocyanurate, or nylon onto the metal sanitaryware or onto the ceramic enamel layer on the metal sanitaryware. 
     
     
       5. The silane primer composition of claim 1, wherein the N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride is capable of bonding the plastic layer onto a steel sanitaryware or onto an enameled steel sanitaryware. 
     
     
       6. The silane primer composition of claim 1, wherein the N-2-(vinylbenzylamino)-ethyl-3-aminopropyltrimethoxysilane monohydrogen chloride is capable of bonding the plastic onto the metal sanitaryware or onto the ceramic enamel layer on the metal sanitaryware to form a reinforced laminate having a thickness of at least 1/8 inch and having a density between about 20 lbs./ft. 3  to about 125 lbs./ft. 3  whereby the laminate is resistant to delamination when subjected to a sudden temperature change of at least about 180° F. 
     
     
       7. The silane primer composition of claim 1, wherein the silane coupler is present in an amount of about 6.5% by weight and the methoxypropanol is present in an amount of about 93.5% by weight.